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The Shortnose electric ray (Torpedo fuscomaculata) is a species of electric ray in the family Torpedinidae. It is characterized by its flattened, disc-shaped body, short snout, and the presence of powerful electric organs located on either side of its head. These organs are used for defense and to stun prey. The dorsal surface is typically mottled brown or grey, providing camouflage against the seabed.
Physical Characteristics
- Body shape
- flat
- Coloration
- Dorsal surface typically mottled brown, grey, or reddish-brown, often with darker spots or blotches, providing excellent camouflage. Ventral surface is usually pale white or cream.
- Scale type
- none
- Mouth position
- inferior
- Distinctive features
- Prominent, kidney-shaped electric organs visible as bulges on either side of the head., Short, rounded snout., Smooth skin, lacking dermal denticles (scales)., Two dorsal fins located on the tail.
- Dorsal fin
- Two relatively small dorsal fins, positioned on the caudal peduncle (tail stalk). The first dorsal fin is typically larger than the second.
- Tail fin
- Well-developed caudal fin, often somewhat rounded or truncate.
- Pectoral fin
- Large, rounded pectoral fins forming the characteristic disc shape, fused to the head.
- Distinctive fins
- Pelvic fins are separate from the pectoral disc and are relatively small.
Identification Tips
Snout length
The snout is notably short and rounded, distinguishing it from other electric ray species with longer snouts.
Dorsal coloration
The mottled brown/grey coloration with darker spots or blotches is a key identifier, aiding in camouflage.
Electric organs
The prominent bulges on either side of the head, housing the electric organs, are characteristic of all Torpedo species.
Absence of denticles
Its smooth skin, lacking any dermal denticles (placoid scales), is a distinguishing feature from many other rays and sharks.
Habitat
- Water type
- saltwater
- Depth
- Typically found in shallow coastal waters, from the intertidal zone down to depths of approximately 110 meters (360 feet).
- Environment
- Prefers sandy or muddy bottoms, often burying itself to ambush prey. Also found in seagrass beds and rocky reefs.
- Geographic range
- Western Indian Ocean, including the Red Sea, East Africa (from South Africa north to Somalia), Madagascar, and the Mascarene Islands.
Aquarium Information
- Care level: expert
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: Not suitable for home aquaria due to specialized needs and electric discharge.
- Temperature: 20-26°C (68-79°F)
- pH level: 8.1-8.4
- Hardness: Not applicable (marine species)
- Compatibility: Not compatible with other fish due to electric discharge and specialized care requirements.
- Special requirements: Requires a very large, specialized tank with a soft substrate, excellent filtration, and a constant supply of live or fresh dead prey. Handling requires extreme caution due to electric shock potential.
Wild Information
- Conservation status: least concern
- Seasonality: No distinct seasonal patterns in distribution or behavior are widely documented, though local movements may occur in response to prey availability or reproductive cycles.
- Market price: Not commercially fished for consumption.
- Commercial importance: none
- Taste: Not typically consumed.
- Texture: Not typically consumed.
- Nutritional value: Not typically consumed.
Key Facts
Electric Defensebehavior
The Shortnose electric ray can generate an electric discharge of up to 200 volts, used for both defense against predators and to stun its prey.
Ambush Predatorbehavior
This ray is a nocturnal ambush predator, often burying itself in sand or mud during the day and emerging at night to hunt for small fish and invertebrates.
Live Birthbehavior
Like other electric rays, Torpedo fuscomaculata is ovoviviparous, meaning the eggs hatch inside the mother's body, and live young are born.
No Scalesinteresting
Unlike most fish, electric rays have smooth, scaleless skin, which is a characteristic feature of the Torpedinidae family.
Safety Information
Dangerous- Safety level: dangerous
- Venomous: No
- Edibility: not recommended
- Handling notes: Extreme caution is required when handling Shortnose electric rays. They can deliver a powerful electric shock (up to 200 volts) as a defense mechanism or to stun prey. This shock, while not typically lethal to humans, can be very painful and disorienting, potentially leading to secondary injuries (e.g., drowning if shocked in water). Avoid direct contact and use insulated tools if handling is absolutely necessary (e.g., for scientific study).
Similar Species
Marbled electric ray
Torpedo marmorata
Torpedo marmorata typically has a more complex, marbled pattern of dark and light markings, and its geographic range is primarily the Mediterranean Sea and eastern Atlantic. T. fuscomaculata generally has a simpler, more uniform mottled brown coloration.
Common torpedo
Torpedo torpedo
Torpedo torpedo often has distinct ocelli (eye-like spots) on its dorsal surface, which are absent in T. fuscomaculata. Its range is also primarily the Mediterranean and eastern Atlantic.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Chondrichthyes
- Order
- Torpediniformes
- Family
- Torpedinidae
- Genus
- Torpedo
- Species
- fuscomaculata
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